Hi.

I have a weird speed bug,
The game runs very smooth for about 1min, then the screens flicker and the game starts to stutter for about 1 min, then the whole thing repeats. It is the same on all settings.
When the game runs smooth the cpu usage is about 12% and when it stutters the cpu usage is between 5-7%.

I play the game with the High setting @1920x1200.

My system:
Windows 7 home premium (installed yesterday)
Alienware m17x (laptop)
Core i7 quad core @1730 - 2900ghz (not sandy)
4 gig ram
60 gig ssd about 280mb read and write per sec.
dual mobility radeon 5870 in crossfire.

Scores according to the windows experience:
cpu: 7.0
ram: 7.3
3d: 6.7
ssd: 7.5

I hope anyone can help, the game is unplayable as it is.